tzdata/backport-Greenland-change-should-affect-only-America-Nuuk.patch
qinyu b2f7656442 tzdata: Greenland change should affect only America/Nuuk; The northern edge of Chihuahua changes to US rules
Greenland change should affect only America/Nuuk; The northern edge of Chihuahua changes to US rules

Signed-off-by: qinyu <qinyu32@huawei.com>
2022-11-30 16:41:41 +08:00

69 lines
3.1 KiB
Diff

From 4b0bd9e54a56b5bbbac55db184c925a6fab3edd6 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 28 Nov 2022 18:19:02 -0800
Subject: [PATCH] Greenland change should affect only America/Nuuk
Reference: https://github.com/eggert/tz/commit/36acd567fbd8df3e085351bec36974fde035e0f0
Conflict: remove NEWS
Although the situation is fluid, it seems I likely guessed wrong
about Ittoqqortoormiit in my Greenland changes three days ago.
(Thanks to Jonas Nyrup.)
* NEWS: Mention this.
* europe (America/Scoresbysund): Revert recent change.
---
europe | 24 +++++++++++++++++-------
1 file changed, 17 insertions(+), 7 deletions(-)
diff --git a/europe b/europe
index 12b1d12..122a0b5 100644
--- a/europe
+++ b/europe
@@ -1161,17 +1161,28 @@ Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn
# http://naalakkersuisut.gl/~/media/Nanoq/Files/Attached%20Files/Engelske-tekster/Legislation/Executive%20Order%20National%20Park.rtf
# It is their only National Park.
+# From Jonas Nyrup (2022-11-24):
+# On last Saturday in October 2023 when DST ends America/Nuuk will switch
+# from -03/-02 to -02/-01
+# https://sermitsiaq.ag/forslagtidsforskel-danmark-mindskes-sommertid-beholdes
+# ...
+# https://sermitsiaq.ag/groenland-skifte-tidszone-trods-bekymringer
+#
# From Jürgen Appel (2022-11-25):
# https://ina.gl/samlinger/oversigt-over-samlinger/samling/dagsordener/dagsorden.aspx?lang=da&day=24-11-2022
# If I understand this correctly, from the next planned switch to
# summer time, Greenland will permanently stay at that time, i.e. no
# switch back to winter time in 2023 will occur.
#
-# From Paul Eggert (2022-11-25):
-# For now, assume that this applies simultaneously to Ittoqqortoormiit
-# (currently -01) as well as to Nuuk (currently -03), and that
-# Danmarkshavn and Thule are unaffected since they are not using EU
-# rules anyway and some of the remarks were about EU rules.
+# From Paul Eggert (2022-11-28):
+# The official document in Danish
+# https://naalakkersuisut.gl/-/media/naalakkersuisut/filer/kundgoerelser/2022/11/2511/31_da_inatsisartutlov-om-tidens-bestemmelse.pdf?la=da&hash=A33597D8A38CC7038465241119EF34F3
+# says standard time for Greenland is -02, that Naalakkersuisut can lay down
+# rules for DST and can require some areas to use a different time zone,
+# and that this all takes effect 2023-03-25 22:00. The abovementioned
+# "bekymringer" URL says the intent is no transition March 25, that
+# Greenland will not go back to winter time in fall 2023, and that
+# only America/Nuuk is affected (though further changes may occur).
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D
@@ -1192,8 +1203,7 @@ Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit
-2:00 - -02 1980 Apr 6 2:00
-2:00 C-Eur -02/-01 1981 Mar 29
- -1:00 EU -01/+00 2023 Mar 25 24:00
- 0:00 - +00
+ -1:00 EU -01/+00
Zone America/Nuuk -3:26:56 - LMT 1916 Jul 28 # Godthåb
-3:00 - -03 1980 Apr 6 2:00
-3:00 EU -03/-02 2023 Mar 25 22:00
--
2.33.0